Biology, 26.11.2019 05:31, jasminelynn135owmyj1
In one experiment, scientists raised mice in germ-free conditions so the mice lacked intestinal microbes. the mice were fed a low-fat diet rich in the complex plant polysaccharides, such as cellulose, that are often called fiber.
when the mice were 12 weeks old, the scientists transplanted the microbial community from the intestine of a single "donor" mouse into all of the germ-free mice. then they divided the mice randomly into two groups and fed each group a different diet.
• group 1 (the control group) continued to eat a low-fat, high-fiber diet.
• group 2 (the experimental group) ate a high-fat, high-sugar diet.
place the following experimental factors below in the correct corresponding place in the chart below.
1. age of the mice
2. diet
3. change in the body fat
4. final composition of the micriboal community
5. initial composition of the micriboal community
6. weight gain
a) factor being tested (indeendent variable)
b) factors controlled (kept consistent)
c) factors to be measured (dependent variable)
Answers: 1
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What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.
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Biology, 22.06.2019 09:10, kaciebrin211
Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.
Answers: 1
Biology, 22.06.2019 15:20, DotDotTaterTot
What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time
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In one experiment, scientists raised mice in germ-free conditions so the mice lacked intestinal micr...
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